Posted by David Malamatenios at 09:52 on 2012 Feb 19
I am about to have the mirrors re-aluminised on my Astro-Systems 6 inch Newtonian (bought in 1987 from Astro-Systems of Luton – alas, they are no longer in business). The company that has been recommended to me is Galvoptics. They will also re-aluminise the secondary mirror for free.